Pump.



PATENTBD FEB. 4, 1908.

M. J. HENRY.

PUMP. APPLIUATION FILED JUNE 6. 1907.

UNITED STATES PATENT OFFICE.

MILTON J. HENRY, OF OAK PARK, ILLINOIS.

PUMP.

To all whom it may concern.'

Be it known that I, MILTON J. HENRY, citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Pumps, of which the following is a full, clear, concise, and exact description.

My invention relates to umps for raising liquids, and more specifica ly for use in elevating the cream from milk in bottles without withdrawing the milk. I-Ieretofore the 'methods for doing this have been imperfect, inasmuch as they did not provide means for removing the cream without partially inverting the bottle, and this always allowed the cream to become mixed more or less with themilk. I have taken advantage of the fact that the heavier liquid, or mil, in this case seeks `the lower level in the bottle, and by inserting the pump, which, in its normal condition, resembles a pencil or long narrow cylinder, and then inflating the bulb which is attached thereto, the level of the liquids in4 the bottle may be raised without disturbing their relative ositions.

I will descri e my invention by reference to the' accompanying drawing, which represents the preferred form thereof, Figure 1 being va vertical sectional View of a bottle containing two liquids having diilerent specific gravities, showing my improved pump in position to be o erated, and E ig. 2 is a view in elevation of t 1e pump showing the bag in its normal condition in full lines, and pary tially expanded in dotted lines.

tube.

.Like letters of reference parts wherever shown. l

The bottle 1 is shown containing milk 2 and cream 3 in about the proportion found with ordinary milk as delivered by dairies. The pump, which comprises a compression chamber or ball 4, is mounted upon the upper end of a tube 5. Within this tube, at its upper end, is a valve 6 which seats against back pressure to maintain the expansion of the bulb 7 secured over the lower end of said As shown in Fig. l, the bag 7 is secured well up on the tube 5, so that as said bulb is inflated it will be held down in place by the lower end of the tube. The tube 5 is perforated near its lower end, and is preferably made with said lower end rounded to Vprevent puncturing said bulb.

The upper part of the device comprises a represent like Patented Feb. 4, 1908.

.Yhollow stopper 8, having a lip or s out 9 formed in its side near the top thereo preferably metallic, but may be made of any suitable material, and having fitted into its to opening a cap l() which is erforated to al ow the tube 5 to be inserted t erein. The stopper 8 is made tapering to fit the ordinary commercial milk bottle, and the washer 11 is simply provided to insure a perfectly tight joint to' prevent the cream or other liquid from being forced up between the sto per and the bottle. The cover or cap 10 is ield in place by binding against the stopper, and is not otherwise fastened, thus making it easily removable.

It may be readily understood that any desired quantity of the cream may be removed, either a few drops or in its entirety, simpl by placing a finger over the top of the bal and pressing downwardly, thus forcing the air down through the valve 6 into the expansible bulb 7. When the ball is released the back pressure from the bulb is sufficient to close the valve 6. This operation may be repeated until all the cream is exhausted.

When it is desired to remove the pump from the Abottle the bulb may be deflated by pressing in upon the side of the ball and openmg the valve, said valve having a plunger l2 extending therethrough for that purpose.

While I have described a erferred forni of my invention, I do not Wis to limit myself to the exact details of constructions herewith shown, nor do I wish to limit myself to using it simply upon milk bottles, as I realize that it may be used fpr numerous other purposes. But

I deem as new and desire to secure by Letters Patent l. The combination with a bottle or other receptacle, of a pump comprising a compression chamber and an expansion chamber, a tube connecting said com ression and eX- pansion chambers, and a hollbw stop er havlng a cov'cr adapted to support sai pump, substantially as'described.

2. `The combination with a receptacle, of a compression pump, a stopper having a spout, a cover for said stop ier, a tube passing through said cover, sai tube having a compression chamber mounted upon its upper end, and an expansible bulb on. its lower end, substantially as and for the purpose specified.

3. In combination with a rece tacle, a tapering, hollow, metallic stopper aving a spout, a pover, a tube passing through said l sure a 'perfect it between said stopperl and le cover, said tube having perforations near its said bottle. lower end and having said lower end moiosed In witness whereof hereunto subscribe Within an exyansible bulb. v my name this 3rd day of June, A. D. 1907 4, In com ination a bottle or other l MILTON J HEXTRY rece tac1e,a stopper havlng a spout, a cover, l L

a tu e passing t rough said cover, a corn- Witnesses:

pression chamber, an expansion chamber, CLARENCE E, SMITH,

and a washer surrounding said stopper to in- FRANK LEAvENwoR'rH. 

